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2.02 valves, which pistons? 

 

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 Post subject: 2.02 valves, which pistons?
Posted: Sat Sep 15, 2007 12:42 pm 
Oompa Loompa
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Ride: BA Fairlane G220

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Hey guys, as some of your know, I'm building a 5.0 with edelbrock heads, a crane 2030 and at the moment a stock bottom end.

The rpm heads have 2.02 valves, and after a quick check of PTV with clay, it seems quite obvious that there will be a collision!

The cost of fly cutting the pistons is about the same as getting a new set of hyper pistons, but the question is, which pistons?

Does anyone know which pistons have reliefs big enough for a 2.02 valve?
I found these on summit, http://store.summitracing.com/partdetai ... w=1&N=700+

Visually the reliefs look fine, but I have no way of 100% knowing if they will be ok. Has anyone built a motor using 2.02 valves with new pistons? and if so, what did you use?

 

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Posted: Sun Sep 16, 2007 1:10 am 
Getting Side Ways
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I'll check the Speedpro book on Monday, but I'm pretty sure that they'll be suitable.

We generally use SRP or Probe pistons for basic deals, or JE, CP or Diamond for top shelf builds

 

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TE50 T1 P01
200kw 5.0L, T5, Koni shocks, King S/Lows, Whiteline swaybars, DBA 4000 rotors, Acron CAI, 80mm Accufab TB, Difillipo headers & cats, twin 2.5" & Aerochambers, 3.91 LSD.

To Come:
Long rod 306, TFS 11R 205cc heads, SHP camshaft, 1.72 R/R, ported TFS Box R, 400hp NX SHO kit...

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Posted: Sun Sep 16, 2007 12:56 pm 
Oompa Loompa
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BOTTLEDUP wrote:
I'll check the Speedpro book on Monday, but I'm pretty sure that they'll be suitable.

We generally use SRP or Probe pistons for basic deals, or JE, CP or Diamond for top shelf builds


if you can find anything with suitable reliefs that doesnt add 8cc to the combustion chamber, that would be great as well.

 

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Posted: Mon Sep 17, 2007 7:24 pm 
Smokin em up
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I have RPM heads #60259 with 2.02 valves / 2031 cam / Crane Gold Race 1.7 RR and am using ACL race series pistons - PVC room to spare. They have decent reliefs.

Richie.

 

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1993 ED F/mont 5.0L, Auto, Edelbrock RPM's, CompCam XE276HR, Crane Gold Race 1.7's, Edelbrock Performer, 75mm T/B, MAP, 42lb , GenIII coils, PH4000's , Twin 2.5", Thermos & underspeeds, 3.7 LSD, 2800 stall and MoTec M800, 372fwhp @ 5400rpm & 387 ft-lb @ 4400 rpm.

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Posted: Mon Sep 17, 2007 8:34 pm 
Getting Side Ways
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Ride: T1 TE50 P01

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Just checked in, the Speed Pros are designed to clear a 2.02, like I said we prefer the SRPs but these will work :)

 

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TE50 T1 P01
200kw 5.0L, T5, Koni shocks, King S/Lows, Whiteline swaybars, DBA 4000 rotors, Acron CAI, 80mm Accufab TB, Difillipo headers & cats, twin 2.5" & Aerochambers, 3.91 LSD.

To Come:
Long rod 306, TFS 11R 205cc heads, SHP camshaft, 1.72 R/R, ported TFS Box R, 400hp NX SHO kit...

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Posted: Mon Sep 17, 2007 9:23 pm 
Oompa Loompa
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Ride: BA Fairlane G220

Location: adelaide
SA, Australia

thanks for your help guys!

 

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